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MDEV-25101 Assertion !strcmp(field->name, "table_name") failed

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btr_node_ptr_max_size(): Let us remove the debug assertion that was
added in MDEV-14637. The assertion assumed that no additional
indexes exist in mysql.innodb_index_stats or mysql.innodb_table_stats.
The code path is working around an incorrect definition of a table,
interpreting VARCHAR(64) as the more correct VARCHAR(199).

No test case will be added, because MDEV-24579 proves that executing
DDL on the statistics tables involves a race condition. The test
case included the following:

	ALTER TABLE mysql.innodb_index_stats ADD KEY (stat_name);
	CREATE TABLE t (a INT) ENGINE=InnoDB STATS_PERSISTENT=1;
This commit is contained in:
Marko Mäkelä 2021-03-10 11:08:51 +02:00
parent ee12b055ff
commit 1af8558193
1 changed files with 0 additions and 1 deletions
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storage/innobase/btr/btr0cur.cc
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@ -837,7 +837,6 @@ static ulint btr_node_ptr_max_size(const dict_index_t* index)
TABLE_STATS_NAME)
|| !strcmp(index->table->name.m_name,
INDEX_STATS_NAME))) {
ut_ad(!strcmp(field->name, "table_name"));
/* Interpret "table_name" as VARCHAR(199) even
if it was incorrectly defined as VARCHAR(64).
While the caller of ha_innobase enforces the